[1] The character was revived in the Modern Age in Femforce #59, by AC Comics, and in Tom Strong #11, by Alan Moore and Chris Sprouse.

[3] Cribbed from Superman's relationship with Lois Lane, Prof. Masters has a secretary named Jane Peters, who despised the professor but idolized the hero.

[6] On Tom Strong's world, they were believed to be comic book characters, but in fact they were real people who inhabited another version of Earth occupying another area of the same universe.

Doc Strange journeys to Tom Strong's Earth to recruit his help while his SMASH comrades remain frozen in time.

He is kept imprisoned and unconscious by a totalitarian government, and clones called Crusaders are created from his DNA to function as super-powered soldiers.

In the spin-off Project Superpowers: Fractured States, the original American Crusader is resurrected alongside other heroes lost in the void.

Archibald Masters, the American Crusader, appears as a center character in the ongoing webcomic Heroes Inc., created in 2009 by Scott E. Austin.

A version of the character was used in the Multiversity series, where he was the leader of a superteam on a parallel Earth, called the Retaliators (a reference to Captain America and his Avengers).